Question

What is the area of a semicircle with a diameter of 2 ?

Answer 1

we have that

the area of semicircle is equal to

`A=(1)/(2)\cdot\pi\cdot r^2`

we have

r=2/2=1

substitute

`\begin{gathered} A=(1)/(2)\cdot\pi\cdot1^2 \\ A=(\pi)/(2) \end{gathered}`

area is equal to pi/2 square units